Hellfire Wyverns are so named for their foul tempers and fiery visages. Their social structure places all females above all males, due to superior physical characteristics and violent dispositions. Forced subservience of the males causes them to become vicious, petty, antisocial, and passive-aggressive compared to the aggressive and social females. However, orphaned hatchlings raised by foster parents of another species can develop surprisingly even tempers and mellow dispositions, proving that their defining unpleasant nature is, in fact, a learned behavior.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

An abnormally aggressive male Hellfire Wyvern, Poojju the Bloodthirsty occupied a territory of rocky lands far to the north of any human settlement. He didn't allow many beings near his lair, and periodically patrolled his land to find any intruders. If he found any, it was common for him to kill them or chase them off, and this included almost any predator including other dragons. His face was scarred, and had a large burn mark doing down his neck, this was presumable from some fight against a stronger dragon. His lair was a mystery, and no man has ever been near it, any who have ventured into that area have never returned. Along with this, no Dragon Slayer has ever bested him, and even some of the best were felled by this beast.